| 单词 | Polygonum |
| 例句 | Polygonum coccineum was the most prominent plant in the pond edge association. A Population Study of the Prairie Vole (Microtus ochrogaster) in Northeastern Kansas 2012-04-08T02:00:23.123Z Polygonum.—A large family, varying much in character, often weedy, but of easy culture in ordinary soil. Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 7 "Horticulture" to "Hudson Bay" 2012-03-04T03:00:13.390Z In varieties of Poa, Polygonum, Allium, Gagea, etc., this phenomenon is constant in plants growing in damp situations. Disease in Plants 2012-03-01T03:00:22Z When still water above a yard deep is left undisturbed, aquatic plants of various genera, such us Nuphar, Nymphæa, Limnanthemum, Stratiotes, Polygonum, and Potamogeton, fill the bottom with roots and cover the surface with leaves. Man and Nature or, Physical Geography as Modified by Human Action 2011-11-11T03:00:34.027Z Polygonum lapathifolium L. Achene shining, dark to chestnut brown, 2–2.2 mm. long, flattened, circular to broadly ovate with abruptly pointed apex, the base obtuse or bearing the remains of the thin calyx. Seeds of Michigan Weeds Bulletin 260, Michigan State Agricultural College Experiment Station, Division of Botany, March, 1910 By the evening of June 4, dozens were calling in shallow water along the edge of this pond in dense Polygonum and other weeds. Field Study of Kansas Ant-Eating Frog Lilium auratum is also superb in such places, and Polygonum Sieboldi and others of this fine race of autumn-blooming plants. Trees and Shrubs for English Gardens A few leaves also of the Polygonum Viviparum were found in one or two specimens. Journal of the Third Voyage for the Discovery of a North-West Passage Little black seeds belonging to various species of Polygonum, are very often present in even good cakes; they are very indigestible, but otherwise are not injurious. The Stock-Feeder's Manual the chemistry of food in relation to the breeding and feeding of live stock Polygonum cunninghami: A very wiry shrubby bush, which always indicates that the ground where it grows is liable to be occasionally flooded. Journal of Landsborough's Expedition from Carpentaria In search of Burke and Wills The Wrightia tinctoria, of the East Indies, an evergreen, with white blossoms, affords some indigo, as does the Isatis tinctoria, or, Woad, in Europe, and the Polygonum tinctorium, with red flowers, a native of China. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. The vegetation of the open places in which the wells are found, consists of grass, Stellaria, Hypericum, Polygonum, Cyperaceæ, Mazus rugosus, Plantago media, etc., all of which are found on the plains. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries It can, however, be itself exterminated by sowing the ground with red clover, which will also vanquish the Polygonum aviculare. Darwinism (1889) Near the river the surface was broken up by beds of dry lagoons which evidently became branches of the main stream in times of flood; and the intervening ground was covered with Polygonum junceum. Three Expeditions into the Interior of Eastern Australia, Volume 2 In it are hollow places as already observed, covered with the Polygonum junceum, which is an unsightly leafless bush or bramble. Three Expeditions into the Interior of Eastern Australia, Volume 1 The common variety grown in Europe is the Polygonum fagopyrum, and P. emarginatum is grown in China and the East. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. At present the plains are barren, the low places being almost exclusively occupied by a Combretum; the rest give a new Polygonum, Lippia, 2 or 3 Compositæ, and a curious dwarf grass. Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries The very extensive country before us, which appeared to absorb these waters, was quite clear of timber, and irrigated by little canals winding amongst Polygonum junceum. Journal of an Expedition into the Interior of Tropical Australia In the case of Polygonum convolvulus, the Black bindweed, I have tried as many as six generations without ever obtaining more than 3%. Species and Varieties, Their Origin by Mutation About one half of the way which we had come today lay across plains, the last portion we crossed containing several hollows, thickly overgrown with the Polygonum junceum. Three Expeditions into the Interior of Eastern Australia, Volume 1 Gaultheria, attached to the trunks of trees, Rhododendrons, and Polygonums, also abounded. The Former Philippines thru Foreign Eyes The marked indicators of great elevation are A. densa, Polygonum, Rheum! Journals of Travels in Assam, Burma, Bhootan, Afghanistan and the Neighbouring Countries Polygonum grew around them, and I doubt not that after a fall of rain water would remain there some time. Journal of an Expedition into the Interior of Tropical Australia The Polygonum Viviparum, viviparous bistort, rises about a foot high, with a beautiful spike of flowers, which are succeeded by buds or bulbs, which fall off and take root. The Botanic Garden. Part II. Containing the Loves of the Plants. a Poem. With Philosophical Notes. When still water above a yard deep is left undisturbed, aquatic plants of various genera, such as Nuphar, Nymphaea, Limnanthemum, Stratiotes, Polygonum, and Potamogeton, fill the bottom with roots and cover the surface with leaves. The Earth as Modified by Human Action Many lagoons were on the flats, surrounded by Polygonums, and frequented by ducks, spoonbills, and various aquatic birds. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 Polygonum in possessing only a single heterostyled species is an extreme case; but every other genus of considerable size which includes some such species likewise contains homostyled species. The Different Forms of Flowers on Plants of the Same Species As we approached the elevated country between us and the distant line of trees, we perceived that the vast level was covered with Polygonum junceum in a verdant state. Journal of an Expedition into the Interior of Tropical Australia Until your last note I had not heard that Mr. Kemp's seeds had produced two Polygonums. More Letters of Charles Darwin — Volume 2 It was about seventy or eighty yards broad, with steep banks and a fine sandy bed, containing detached pools of water surrounded by Polygonum, and extremely boggy. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 After two miles travelling, we crossed another creek with fine Polygonum water-holes, and, emerging from it into a second plain, we saw a flock of emus in the distance. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 Differently to what occurs in the other genera hitherto noticed, Polygonum, though a very large genus, contains, as far as is at present known, only a single heterostyled species, namely the present one. The Different Forms of Flowers on Plants of the Same Species The water-holes were surrounded by high Polygonums; blue Nymphaeas were observed in several of them; and ducks were very numerous. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 Two miles farther we came to a fine large water-hole, surrounded by Polygonums and young water-grass, and, at two miles farther, to another, and in about the same distance to a third. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 From a large Polygonum water-hole which had recently become dry, a swarm of whistling ducks rose, probably scared by our approach. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 At the west side of the plain, we found a chain of fine long lagoons, surrounded by Polygonum, and apparently well stocked with fish. Journal of an Overland Expedition in Australia : from Moreton Bay to Port Essington, a distance of upwards of 3000 miles, during the years 1844-1845 Polygonum also is the sole heterostyled genus in its family; and though it is a very large genus, no other species except P. fagopyrum is thus characterised. The Different Forms of Flowers on Plants of the Same Species |
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